Steam-boiler for locomobiles or other machines.



PATENTED MAY 26, 1903.

' WL BEST. STEAM BOILER FOR LOGOMOBILES OR OTHER MACHINES.

APPLICATION FILED JULY 2,-1901.

no MODEL.

Mimassas UNITED STATES Patented May 26, 1 903 PATENT OFFICE.

WILLIAM NEWTON BEST, OFLOS ANGELES, OALIFOENIA, AssIeN E OF ONE-HALF To JOHN F. GULICK, BENJAMIN F. MAsTEN, AND WILLIAM A. OOOPEE, OF LOS ANGELES, OALIFORNIA.

STEAM-BOILER FOR LOCOMOBILES OR OTHER MACHINES.

SPECIFICATION formingpart of Letters Patent No. 728,840, dated May 26, 1903-.

Application filed July 2, 1901. Serial No- 66,875. (No modeLI T0 at whom it may concern:

, Be it known that I, WILLIAM NEWTON BEST, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Improvement in Steam-Boilers for Locomobiles or for other Machines, of which the following is a specification.

The object of this invention is to produce high-pressure steam with great economy of fuel, rendering the steam more efiective, because of its dryness, and also economizing lubrication.

This invention is applicable to different kinds of boilers (horizontal, upright, or inclined) and comprises a disk-shaped combined heat deflector and feed-steam-superheating dome extending over almost the entire area of the flue-sheet and being very shallow and entirely above the water-line and located in the draft-passage at a short distance from the flue-sheet to allow the heat-currents t0 impinge against the bottom of said disk and to pass up around the edges thereof after being deflected thereby.

It is well known that the pressure of the boiler varies in accordance with the dryness of the steam, the steam end of the boiler having the greater pressure.

One of the objects of this invention is to avoid the great difficulty which is well known in locomobile-boilers on account of foaming or by the sudden opening of the throttle, whereby the water in the boiler so rises that it will mingle with the steam and pass out through the throttlevalve into the steamchest of the engine, which causes injury to the engines and may cause the heads of the cylinders to break. 'By the use of this invention the superheater is of such an area and so located that it prevents this difficulty and also provides steam of higher efficiency, be.- cause it can have greater power by expansion.

An object of this invention is to provide cheap, simple, light, and strong means which can be readily applied to an upright boiler to superheat the steam and deliver it to the throttle-pipe.

The accompanying drawings illustrate this invention.

Figure I is an elevation of a boiler enibodying my invention as applied in an upright tubular boiler. Fig. II is a vertical midsectionrof the superheater in place on the flue-sheet of a boiler, a portion of which is shown. Fig. III is a plan section on line III III, Figs. I and II.

1 indicates a tubular steam-boiler. 2 in dicates a superheater therefor consisting of a shallow closed'hollow shell or vessel fur nished with an inlet-pipe 3 to communicate with the steam-space of the boiler proper, 1, and with steam-outlets, as at 4, 5, and 6, for the throttle, gage, and safety-valve, respectively. (Notshown) Preferably the superheating vessel 2 is made of cast metal and is furnished with cast stays 7, consisting in webs extending between the heads 8 9 of the superheater.

10 indicates steady-lugs, preferably three in number, projecting from the rim of the superheater 2.

11 indicates steady-bolts screwed through the lugs to engage the flue-sheet 12 to hold the superheater steady above the flue-sheet.

The superheating vessel 2 will in practice be substantially horizontal and arranged in the path of the heat from the burner 13 after the heat has passed through the tubes 14 of the boiler proper.

In practical operation the water-line in the generating-boiler 1 will be below the upper flue-sheet 12 of said boiler an appropriate distance to allow steam-space sufiicient Within the judgment of the engineer, and the steam evaporated from the water in the boiler will pass through the pipe 3 and into the shallow closed superheater, and when in said super-heater it is acted upon with great efficiency by the waste heat coming through the tubes, thus superheating and drying the steam.

The pipe 3 is preferably cast at the center of the lower head 9 of the superheater 2 and is screw-threaded at its lower end to screw into the flue-sheet 12 of the boiler.

13 indicates a burner for supplying heat to the boiler.

indicates the fire-space below the boiler.

In the upright form of boiler the superof the superheater.

heater 2 is preferably circular, and the steaminlet pipe 3 projects downward from the center thereof to screw into the flue-sheet 12 of the upright boiler.

When the bu rner 13 isin operation, the heat produced thereby flows upward through the tubes, thus generatingsteam in the boiler, and such steam passes into the superheater and is there spread out over a large area of heatingsurface formed by the bottom 9 or lower head The steam then passes out through the appropriate outlet.

By reason of the construction set forth the su erheater may be readily manufactured and combines great strength and compactness with high efficiency.

What I claim, and desire to secure by Letters Patent of the United States, is-

1. The combination with an upright tubular boiler; of a closed disk-shaped vessel above the tubes to intercept the heat that passes through said tubes and furnished with a pipe screwed into the head of the boiler and also furnished with steam-outlet; and steady-bolts connected with the superheater and engaging the boiler.

2. A steam-superheater consistingin a shallow, fiat, cast-metal vessel, furnished with stay-webs which connect the heads of the vessel, an inlet-pipe to screw into a boiler, and

a steam-outlet substantially as set forth.

3. A flat hollow superheater for steamboilers constructed with flat heads and a short vertical wall and stays connecting the same; a central inlet-pipe in the lower head; and steam-outlets in the vertical wall.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, at Los Angeles, California, this 26th day of June, 1901.

WILLIAM NEWTON BEST.

Witnesses:

JAMES R. TOWNSEND,

J ULIA ToWNsEND. 

